201126208 PT1841 33395twf.doc/n 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光學膜片，且特別是有關於一種 增光片。 【先前技術】 隨著光電產業的進步’對光源模組所提供的出光光形 之要求亦逐漸地增加。此時，各式各樣的光學膜片便被發 展出來’以因應對光形的各種需求。這些光學膜片包括擴 月欠片（diffusion sheet )、增光膜（brightness enhancement film, BEF )，例如是稜鏡片（prism sheet)、透鏡陣列（lens array )… 等。其中，作為增光膜來使用的稜鏡片是利用複數個柱狀 稜鏡的出光稜面來對入射方向不同的光線作選擇。一般而 言’以60度左右的角度入射柱狀稜鏡底部的光線會受到柱 狀棱鏡的折射作用而穿透稜鏡，並以約略垂直於柱狀稜鏡 底部的方向出射。此外，太過大於或太過小於60度的光線 則會受到出光稜面的全反射作用而無法穿透稜鏡，並被稜 鏡反射回稜鏡片下方的光學元件而再次被利用。 如此一來，稜鏡片便能達到聚光效果，而使出射光線 盡1為正向出射。 然而，柱狀稜鏡的頂部之棱線（crest line)與相鄰二 柱狀稜鏡之間所形成的谷線非常明顯且呈有規律性的間隔 配置’如此容易與配置於棱鏡片或增光膜上方的顯示面板 (如液晶顯示面板）形成疊紋（moire )，進而影響顯示面 201126208 PT1841 33395twf.doc/n 板的顯不品質。此外柱狀稜鏡在魏處所形成的尖 鄰的光學元件亦容易產生磨損或刮傷的情形。再者，/由 每-柱狀棱鏡的高度皆相同’因此稜鏡片容易*相来 學，片產生局部沾黏的情形，導致顯示晝面產^局部區2 慕當66 Ϊ目參。 中華民國專利第D〇2989號提出—種光學膜片，201126208 PT1841 33395twf.doc/n VI. Description of the Invention: [Technical Field] The present invention relates to an optical film, and more particularly to a light-increasing sheet. [Prior Art] With the advancement of the photovoltaic industry, the requirements for the light output pattern provided by the light source module have gradually increased. At this time, a wide variety of optical films have been developed to meet the various needs of the light shape. These optical films include a diffusion sheet and a brightness enhancement film (BEF) such as a prism sheet, a lens array, and the like. Among them, the ruthenium sheet used as the brightness enhancement film is a light ray having a plurality of columnar ridges for selecting light rays having different incident directions. In general, light incident on the bottom of the cylindrical crucible at an angle of about 60 degrees is deflected by the cylindrical prism to penetrate the crucible and exits in a direction approximately perpendicular to the bottom of the cylindrical crucible. In addition, light that is too much or too little less than 60 degrees will be totally reflected by the exit facet and will not penetrate the ridge, and will be reflected back to the optical element below the cymbal and reused. In this way, the enamel film can achieve the concentrating effect, and the outgoing light is emitted as a positive one. However, the valley lines formed between the crest line at the top of the columnar crucible and the adjacent two columnar crucibles are very distinct and arranged at regular intervals. It is so easy to arrange with the prism sheet or to add light. The display panel above the film (such as the liquid crystal display panel) forms a moire, which in turn affects the display quality of the display surface 201126208 PT1841 33395twf.doc/n board. In addition, the adjacent optical elements formed by the columnar crucibles at the Wei are also prone to wear or scratches. Furthermore, the height of each of the columnar prisms is the same. Therefore, the cymbal is easy to be phased, and the sheet is partially viscous, resulting in the display of the 昼面产^ local area 2 慕当66 Ϊ目. The Republic of China Patent No. D〇2989 proposes an optical film,
透明基層、結構層及複數個導料元。結構層可為集^ 兀（稜鏡結構）並設置於透明基層上。集光單元具^頂^ 線及兩表面。導光單元位於頂峰線或兩表面上。^光單_ 可為錐形、圓拱形、圓弧形或稜鏡形。 凡 此外 τ芈民國寻利第Μ352033號提出一種光學膜， 具有微結騎’且微結構層為柱狀結構。巾華、 f4896號提出，包含基板及魏個彎曲^ 早兀。中華民國專利公開第細712655號提出—種光學 膜，其表面具有複數個錢_鏡塊。巾華民國專利公二 第200819855號提出—種光學則，其—表面具有複數^ 導光結構，且每-微導光結構具有二個或二個以上的峰： 美國專利第7278771號提出—種光學膜，其-表面具有織 曲的稜鏡柱結構。美國專利第6845212號提出—種光^ 膜，其一表面具有波浪形稜鏡柱結構。 【發明内容】 ，其能有效改善與其他光學元 、刮傷及磨損現象的至少其_。 本發明提供一種增光片 件所產生的疊紋、局部沾黏 201126208 PT1841 33395twf.doc/n 本發明的其他目的和優點可以從本發 術特徵中得到進一步的了解。 斤揭路的技 為^述之-或部份或全部目的或是其他 =二實施例提出-種增抑，包括—透光基板^ 條狀域及複油凸起結構。透光紐具有相對的—第一 表面及-第二表面。這些條狀稜鏡配置於第—表面上。每 條狀稜鏡具有二棱面’此二稜面的交界處形成-稜線 (crest Ime) ’且每二相鄰之條狀棱鏡之間形成一谷線。 這些凸起結構配置於至少部分·條狀稜鏡上。每一凸起 結構具有二翼部，此二翼部分別位於對應的條狀棱鏡之二 稜面上。此二翼部的相接處形成—凸出端，凸出端凸出於 對應的條狀稜鏡之稜線。每一翼部從凸出端延伸至谷線， 且凸出於對應的稜面與谷線。 本發明之另一實施例提出一種增光片，包括一透光基 板、複數個條狀稜鏡。透光基板具有相對之一第一表面及 一第二表面。這些條狀稜鏡配置於第一表面上。每一條狀 稜鏡具有一往靠近與遠離透光基板的方向上下起伏之棱 線’此稜線相對於條狀棱鏡的延伸方向上下起伏。條狀稜 鏡在與其延伸方向垂直的任一截面上具有一彎曲頂部與二 彎曲側邊’彎曲頂部的曲率半徑不等於彎曲側邊的曲率半 徑’且這些條狀稜鏡在垂直於第二表面的方向上之平均高 度至少部分不相同。 基於上述，由於本發明實施例之增光片具有凸出於條 狀棱鏡的棱線之凸起結構，或是於本發明另一實施例中， 201126208 PT1841 33395twf.doc/n 增光片^條狀稜鏡在錢於透絲板的第二表面之方向上 的平均南度至少部分不相同，因此可打破稜線的規則性與 條狀棱鏡的高度均勻性。如此一來，便可有效降低增光片、 與其他光學元件所產生的疊紋現象，且可避免增光片與其 他光學兀件產生局部區域沾黏的現象，進而使採用本發明 之實施例之增光片的光源模組能夠提供均勻的面光源:且 使採用本發明之實施例之增光片的顯示裝置能夠提供。所 _ 良好的晝面。 口貝 一為讓本發明之上述特徵和優點能更明顯易懂，下文 舉貫施例，並配合所附圖式作詳細說明如下。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 =下配合麥考圖式之一較佳實施例的詳細說明中，將可清 疋的王現。以下實施例中所提到的方向用語，例如：上、 鲁 下左右、鈾或後專，僅是參考附加圖式的方向。因此， 使用的方向用語是用來說明並非用來限制本發明。 圖1A為本發明之一實施例之增光片的透視圖，而圖 為圖1A之增光片沿著w線的剖面圖。請參照圖1八與 圖，本實施例之增光片100可應用於光源模組或液晶辱貝 不的背光模組，以提升光源模組或背光模組的輝度，其 中月光模組包括側邊入光式背光模組與直下式背 本實施例之增光片⑽包括-透光基板UG、複數個條狀 稜鏡120及複數個凸起結構13〇。透光基板u〇具有相對 201126208 rx i〇^i j3395twf.doc/n 之一第一表面112及一第二表面114。在本實施例中，透 光基板110例如為透明基板。這些條狀稜鏡12()配置於第 一表面112上。在本實施例中，每一條狀稜鏡12〇沿著一 第一方向D1延伸’且這些條狀稜鏡12〇沿著一第二方向 D2排列。此外’在本實施例中，第一方向di實質上垂直 於第二方向D2。每一條狀稜鏡12〇具有二稜面122，此二 稜面122的父界處形成一棱線丨21 ’且每二相鄰之條狀棱 鏡120之間形成一谷線丨23。在本實施例中，這些條狀稜 鏡120例如是透明稜鏡。 這些凸起結構130配置於至少部分這些條狀棱鏡120 上。在本實施例中’所有的條狀稜鏡120上皆配置有凸起 結構130 ’然而’在其他實施例中，亦可以是在一部份的 條狀稜鏡120上配置凸起結構130，而另一部分的條狀稜 鏡120上則未配置凸起結構13〇。在本實施例中，凸起結 構130例如為透明凸起結構13〇。每一凸起結構13〇具有 一翼部132 ’此二翼部132分別位於對應的條狀稜鏡120 之二棱面122上。此二翼部132的相接處形成一凸出端 134 ’凸出端134凸出於對應的條狀稜鏡120之稜線121。 每一翼部132從凸出端134延伸至谷線123，且凸出於對 應的稜面122與谷線123。在本實施例中，凸起結構13〇 與條狀稜鏡120為一體成型，而條狀稜鏡12〇與透光基板 110為各自成型。然而，在其他實施例中，凸起結構13〇、 條狀稜鏡120與透光基板110亦可以是一體成型。或者， 凸起結構130與條狀棱鏡120可為各自成型。 201126208 PT1841 33395twf.doc/n 由於本實施例之增光片100具有凸出於條狀稜鏡120 的稜線121之凸起結構130，因此可打破稜線121的規則 1"生與條狀稜鏡120的鬲度均勻性。如此一來，便可有效降 低增光片與其他光學元件（如增光片1〇〇上的液晶面板） 所產生的豐紋現象，且可避免增光片與其他光學元件 (如其他光學膜片或液晶面板）產生局部區域沾黏的現 象，進而使採用本實施例之增光片100的光源模組能夠提 • 供均勻的面光源，且使採用增光片100的顯示裝置（如液 晶顯不裝置）能夠提供品質良好的晝面。再者，由於凸起 結構130亦凸出於谷線123與稜面122，因此亦可打破谷 線123與稜面122的規則性，以有效降低疊紋現象，進而 改善光源模組所提供的面光源之均勻性與顯示裝置所提供 的晝面品質。 在本實施例中，凸出端134的表面135呈圓滑狀，如 此可避免凸出端134與其他光學元件（如其他光學膜片或 ’、、員示面板）產生刮彳劳或磨損的情形。此外，由於凸出端1Μ • 凸出於稜線121，亦即凸出端在垂直於第二表面114的方 向上之尚度高於稜線121，因此可避免條狀稜鏡12〇之二 稜面122的交界處（即稜線121處）所形成的尖角與相鄰 $光學it件（如其他光學膜片或顯示面板）產生刮傷或磨 ，的情形。在本實施例中，凸出端134的最高點較棱線12ι 南出1微米以上。 在本實施例中，這些凸起結構丨3〇彼此分離配置，且 每一相鄰之凸起結構130的間距至少部分不同。舉例而 201126208 PT1841 33395twf.doc/n 言，圖1A中之二相鄰之凸起結構130的間距PI便不等於 另二相鄰之凸起結構130的間距P2。如此一來，可降低凸 起結構130的規則性，以降低疊紋現象，進而改善光源模 組所提供的面光源之均勻性及顯示裝置所提供的晝面品 質。在一實施例中，每二相鄰之凸起結構130的間距可呈 亂數分佈，以進一步降低凸起結構130的規則性。在本實 施例中，任二相鄰之凸起結構130的最高點之間距在50 微米以上。 ' 圖2為本發明之另一實施例之增光片的剖面圖。請參 照圖2，本實施例之增光片l〇〇a與圖1B之增光片100類 似，而兩者的差異如下所述。在本實施例之增光片100a 中，條狀稜鏡120a之二稜面122的交界處（即稜線121a 處）形成一倒圓角，如此可進一步降低條狀稜鏡120a與相 鄰的光學元件產生刮傷或磨損的機會。 圖3A為本發明之又一實施例之增光片的立體圖，而 圖3B為圖3A之增光片沿著II-II線的剖面圖。請參照圖 3A與圖3B’本實施例之增光片l〇〇b與圖1A之增光片1〇〇 類似，而兩者的差異如下所述έ在本實施例之增光片l〇〇b 中’條狀棱鏡120b的稜線121b往靠近與遠離透光基板ho 的方向上下起伏。舉例而言，條狀稜鏡120b的稜線121b 在垂直於第一表面114的方向上上下起伏，且稜線121 b 沿著條狀稜鏡120b的延伸方向（如第一方向di)上下起 伏。如此一來，便可有效避免增光片1001)與其他光學元件 (如其他光學膜片或液晶面板）產生局部區域沾黏的現 201126208 PT1841 33395twf.doc/n 象’進而使採用増光片100b的光源模組能夠提供均句的面 光源’且使採用增光片100b的顯示裴置（如液晶顯示裝置） 能夠提供品質良好的晝面。 此外，在本實施例中，條狀棱鏡120b在與其延伸方 向（如第一方向D1)垂直的任一截面上具有一彎曲頂部 124b與二彎曲側邊126b，彎曲頂部i24b的曲率半徑不等 於彎曲側邊126b的曲率半徑。在本實施例中，彎曲頂部 鲁 124b的曲率半控小於幫曲側邊i26b的曲率半徑，且彎曲 頂部124b與彎曲側邊126b皆往條狀稜鏡12〇b外凸出。然 而，在其他實施例中，彎曲頂部124b亦可以用尖角來取 代’且彎曲側邊126b則可用直線形側邊來取代。 再者，在本實施例中，這些條狀棱鏡120b在與第二 表面114垂直的方向上之平均高度至少部分不相同。舉例 而吕，條狀稜鏡120b-l的平均高度便高於條狀稜鏡i2〇b-2 的平均高度。如此一來，可以更為大幅地降低沾黏現象發 生的機率。如同圖1A與圖1B之實施例，本實施例之凸起 結構130b的翼部132b亦是從凸出端134b延伸至谷線 123，其中凸出端134b凸出於稜線121b，而翼部132b凸 出於條狀稜鏡120b的稜面122b與谷線123。然而，在其 他貫施例中’翼部132b亦可由凸出端134b延伸至稜面 122b ’但沒有延伸至谷線123。 在本實施例中，每一凸起結構13〇b配置於稜線121b 之遠離透光基板110的波峰上。然而，在其他實施例中， 至少部分凸起結構亦可以是位於稜線之靠近透光基板的波 201126208 j. χ xu-η -»3395twf.doc/n 谷上。 在本貫施例中，個別的條狀稜鏡12〇b在一截面（例 如沿著圖3A的參考直線L且沿著與第二表面114垂直的 方向所切出的截面）上的最大高度交替地高於及低於這些 條狀稜鏡120b自身的平均高度，且此截面不平行於這些條 狀稜鏡120b的延伸方向（即第一方向;〇1)。補充說明一 點，條狀稜鏡120b的平均高度意指條狀稜鏡12〇b上的稜 線fib至第二表面114的平均距離。在本實施例中，此截 面貫質上垂直於這些條狀稜鏡UOb的延伸方向。具體而 δ，圖3A之沿著參考直線L所切出的截面從左而右依序 分別是由條狀稜鏡 12〇b-2、12〇b-l、120b-4、120b_6、 120b-8 、 120b-3 、 120b-10 、 120b-12 、 120b-5 、 120b-14 所 形成’且這些條狀稜鏡12〇b的截面分別交替地靠近於自身 稜線121b的波峰及波谷。於本實施例中，條狀棱鏡12〇b_2 的截面靠近於自身稜線121b的波峰，故i2〇b-2在截面上 的最大高度高於自身的平均高度；條狀稜鏡12〇]>1的截面 Λ近自身稜線121b的波谷，故條狀稜鏡12〇b-l在截面上 的最大尚度低於自身的平均高度；而條狀稜鏡12〇b_4的截 面靠近自身稜線121b的波铎，故條狀稜鏡12〇b-4在截面 上的最大高度高於自身的平均高度……以此類推。此外， 在本實施例中，在與參考直線乙平行的多個截面上亦會出 現上述中不同稜鏡的截面分別鄰近於自身稜線的波峰或波 谷的情形，且不同稜鏡的截面分別交替地鄰近於波峰與波 谷。如此一來，便可進一步抑制疊紋與沾黏現象。 201126208 F11S41 33395twf.doc/n 在本實施例中，平均高度為局部極大值的任二相鄰條 狀稜鏡120b間設有至少一平均高度非局部極大值之條狀 稜鏡120b。舉例而言’條狀稜鏡120b-l、120b-3、120b-5 的平均高度為局部極大值，條狀稜鏡120b-2、120b-4、 120b-6、120b-8、120b_10、120b-12、120b-14 的平均高度 非局部極大值’而平均高度為局部極大值之條狀稜鏡 120b-l與條狀稜鏡120b-3之間設有平均高度非局部極大 值之條狀棱鏡120b-4、120b-6、120b-8，且平均高度為局 部極大值之條狀稜鏡120b-3與條狀稜鏡12〇b-5之間設有 平均高度非局部極大值之條狀稜鏡120b-10、120b-12。如 此一來，可更為有效地抑制沾黏現象。 圖4為本發明之再一實施例之增光片的上視圖。請參 照圖4 ’本實施例之增光片100c與圖ία之增光片ι〇〇類 似，而兩者的差異如下所述。在本實施例之增光片1〇〇c 中，條狀稜鏡120c的稜線121往平行於第二表面（如圖 1A之第二表面114)的方向（即平行於圖面的方向）左右 彎曲。如此一來，便可有效抑制疊紋現象。 在本實施例中’谷線123仍呈直線形，然而，在其他 實施例中，谷線123亦可以往平行於第二表面的方向左右 彎曲。此外，在另一實施例中，條狀稜鏡的稜線除了如圖 4般左右彎曲外，亦可同時如圖3A般上下起伏。值得注意 的疋，圖3A中之稜線121b僅有上下起伏，而沒有左右彎 曲。再者，谷線亦可僅上下起伏而不左右彎曲，或者同時 上下起伏與左右彎曲。另外，在本實施例中，這些條狀稜 鏡的稜線之起伏或彎曲變化可具有一致性或不具有一致 201126208 κι ΐδ4ΐ j3395twf.doc/n 性。 、综上所述’本發明之實施例的增光片可具有以下優點 或功效之至少其一。由於本發明之實施例之增光片具有凸 出於條狀稜鏡的稜線之凸起結構，因此可打破稜線的規則 性與條狀稜鏡的高度均勻性。如此一來，便可有效降低增 光片與其他光學元件所產生的疊紋現象，且可避免增光片 與其他1學元件產生局部區域沾黏的現象’進而使採用本 發明之貫施例之增光片的光源模組能夠提供均勻的面光Transparent base layer, structural layer and a plurality of guide elements. The structural layer may be a collection (稜鏡 structure) and disposed on the transparent substrate. The light collecting unit has a top wire and two surfaces. The light guiding unit is located on the top line or both surfaces. ^Light sheet _ can be tapered, rounded, rounded or 稜鏡 shaped. In addition, an optical film is proposed in the Republic of China, No. 352033, which has a micro-junction and the microstructure layer is a columnar structure. Turban Hua, f4896 proposed, including the substrate and Wei bending ^ early. The Republic of China Patent Publication No. 712655 proposes an optical film having a plurality of walls _ mirror blocks on its surface. Japanese Patent No. 200819855 proposes an optical type, the surface of which has a plurality of light guiding structures, and each of the micro-light guiding structures has two or more peaks: U.S. Patent No. 7,277,771 An optical film whose surface has a textured columnar structure. U.S. Patent No. 6,852,212 proposes a light film having a wavy cylindrical structure on one surface. SUMMARY OF THE INVENTION It is effective in improving at least the other optical elements, scratches, and wear phenomena. The present invention provides a embossing, partial sticking of a brightness enhancing sheet. Other objects and advantages of the present invention will become further apparent from the features of the present invention. The technique of squeezing the road is described as - or part or all of the purpose or other = two examples - a kind of suppression, including - the light-transmissive substrate ^ strip-shaped domain and the re-oil convex structure. The light-transmissive button has opposing first and second surfaces. These strips are arranged on the first surface. Each of the strips has a bifurcation surface. The junction of the biplanes forms a crest Ime and a valley line is formed between each two adjacent strip prisms. These raised structures are disposed on at least a portion of the strips. Each of the raised structures has two wings, which are respectively located on the two facets of the corresponding strip prisms. The junction of the two wings forms a convex end, and the convex end protrudes from the ridge line of the corresponding strip. Each wing extends from the convex end to the valley line and protrudes from the corresponding facet and valley line. Another embodiment of the present invention provides a brightness enhancement sheet comprising a light transmissive substrate and a plurality of strips. The light transmissive substrate has a first surface and a second surface. These strips are arranged on the first surface. Each of the strips has an ridge line that undulates up and down in a direction away from the transparent substrate. The ridge line undulates up and down with respect to the direction in which the strip prisms extend. The strip-shaped crucible has a curved top and two curved sides on either section perpendicular to its extending direction. The radius of curvature of the curved top is not equal to the radius of curvature of the curved side' and the strips are perpendicular to the second surface. The average height in the direction is at least partially different. Based on the above, since the brightness enhancement sheet of the embodiment of the present invention has a convex structure protruding from the ridge line of the strip prism, or in another embodiment of the present invention, 201126208 PT1841 33395twf.doc/n is added with a strip edge The average southness of the mirror in the direction of the second surface of the disk is at least partially different, thus breaking the regularity of the ridge and the height uniformity of the strip prism. In this way, the phenomenon of the embossing of the brightness-increasing sheet and other optical components can be effectively reduced, and the phenomenon that the brightness-increasing sheet and the other optical components are locally adhered can be avoided, thereby enhancing the brightness of the embodiment of the present invention. The light source module of the sheet is capable of providing a uniform surface light source: and a display device using the brightness enhancement sheet of the embodiment of the present invention can be provided. _ Good face. The above features and advantages of the present invention will become more apparent and understood from the following description. [Embodiment] With regard to the foregoing and other technical contents, features and effects of the present invention, in the detailed description of one of the preferred embodiments of the McCaw chart, it will be clear. The directional terms mentioned in the following examples, such as upper, left and right, uranium or post-special, are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1A is a perspective view of a brightness enhancement sheet according to an embodiment of the present invention, and is a cross-sectional view of the brightness enhancement sheet of Figure 1A taken along line w. Referring to FIG. 18 and FIG. 18 , the brightness enhancement sheet 100 of the embodiment can be applied to a backlight module of a light source module or a liquid crystal to enhance the brightness of the light source module or the backlight module, wherein the moonlight module includes a side edge. The light-increasing sheet (10) of the light-input type backlight module and the direct-type backing embodiment includes a light-transmitting substrate UG, a plurality of strip-shaped crucibles 120, and a plurality of convex structures 13A. The light transmissive substrate u has a first surface 112 and a second surface 114 opposite to the 201126208 rx i〇^i j3395twf.doc/n. In the present embodiment, the light transmitting substrate 110 is, for example, a transparent substrate. These strips 12() are disposed on the first surface 112. In the present embodiment, each of the strips 12〇 extends along a first direction D1 and the strips 12〇 are arranged along a second direction D2. Further, in the present embodiment, the first direction di is substantially perpendicular to the second direction D2. Each of the strips 12 has a bifurcation surface 122, and a ridge line 21' is formed at the parent of the biplane 122, and a valley ridge 23 is formed between each two adjacent strip prisms 120. In the present embodiment, the strip prisms 120 are, for example, transparent crucibles. These raised structures 130 are disposed on at least a portion of the strip prisms 120. In the present embodiment, all of the strips 120 are provided with a raised structure 130. However, in other embodiments, the raised structure 130 may be disposed on a portion of the strips 120. On the other part, the strip structure 120 is not provided with the convex structure 13〇. In the present embodiment, the convex structure 130 is, for example, a transparent convex structure 13A. Each of the raised structures 13A has a wing portion 132' which is located on the two-sided surface 122 of the corresponding strip-shaped crucible 120, respectively. The junction of the two wings 132 forms a convex end 134'. The convex end 134 protrudes from the ridge line 121 of the corresponding strip-shaped crucible 120. Each wing 132 extends from the raised end 134 to the valley line 123 and projects from the corresponding facet 122 and valley line 123. In the present embodiment, the raised structure 13〇 is integrally formed with the strip-shaped crucible 120, and the strip-shaped crucible 12〇 and the transparent substrate 110 are formed separately. However, in other embodiments, the raised structure 13 , the strip 120 and the transparent substrate 110 may also be integrally formed. Alternatively, the raised structure 130 and the strip prisms 120 can be formed separately. 201126208 PT1841 33395twf.doc/n Since the brightness enhancement sheet 100 of the present embodiment has the convex structure 130 protruding from the ridge line 121 of the strip-shaped crucible 120, the rule 1" of the ridge line 121 can be broken. Uniformity of twist. In this way, it is possible to effectively reduce the phenomenon of blooming caused by the addition of light and other optical components (such as the liquid crystal panel on the brightness enhancement sheet), and to avoid the addition of light and other optical components (such as other optical films or liquid crystals). The panel) causes a local area to adhere, so that the light source module using the brightness enhancement sheet 100 of the embodiment can provide a uniform surface light source, and the display device (such as a liquid crystal display device) using the brightness enhancement sheet 100 can Provide good quality noodles. Moreover, since the convex structure 130 also protrudes from the valley line 123 and the facet surface 122, the regularity of the valley line 123 and the facet surface 122 can also be broken, so as to effectively reduce the moiré phenomenon, thereby improving the provided by the light source module. The uniformity of the surface light source and the quality of the kneading surface provided by the display device. In this embodiment, the surface 135 of the protruding end 134 is rounded, so that the convex end 134 and the other optical components (such as other optical films or ', the panel) may be scratched or worn. . In addition, since the convex end 1Μ protrudes from the ridge line 121, that is, the convex end is higher in the direction perpendicular to the second surface 114 than the ridge line 121, the strip surface of the strip 12稜鏡 can be avoided. The sharp corner formed by the junction of 122 (i.e., at the ridge 121) and the adjacent $ optical member (such as other optical films or display panels) are scratched or ground. In the present embodiment, the highest point of the convex end 134 is more than 1 micron or more from the ridgeline 12ι. In the present embodiment, the raised structures 丨3〇 are disposed apart from each other, and the pitch of each adjacent raised structure 130 is at least partially different. For example, 201126208 PT1841 33395twf.doc/n, the pitch PI of the adjacent raised structures 130 in FIG. 1A is not equal to the pitch P2 of the other adjacent raised structures 130. In this way, the regularity of the raised structure 130 can be reduced to reduce the embossing phenomenon, thereby improving the uniformity of the surface light source provided by the light source module and the quality of the surface provided by the display device. In one embodiment, the spacing of each two adjacent raised features 130 can be distributed in a random number to further reduce the regularity of the raised features 130. In this embodiment, the distance between the highest points of any two adjacent raised structures 130 is more than 50 microns. Figure 2 is a cross-sectional view of a brightness enhancement sheet according to another embodiment of the present invention. Referring to Fig. 2, the brightness enhancement sheet l〇〇a of the present embodiment is similar to the brightness enhancement sheet 100 of Fig. 1B, and the difference between the two is as follows. In the brightness enhancement sheet 100a of the present embodiment, the intersection of the two-sided surface 122 of the strip-shaped crucible 120a (i.e., at the ridge line 121a) forms a rounded corner, which further reduces the strip-shaped crucible 120a and the adjacent optical element. Gives the opportunity to scratch or wear. 3A is a perspective view of a brightness enhancement sheet according to still another embodiment of the present invention, and FIG. 3B is a cross-sectional view of the brightness enhancement sheet of FIG. 3A taken along line II-II. Referring to FIG. 3A and FIG. 3B, the brightness enhancement sheet l〇〇b of the embodiment is similar to the brightness enhancement sheet 1〇〇 of FIG. 1A, and the difference between the two is as follows in the brightness enhancement sheet l〇〇b of the embodiment. The ridgeline 121b of the strip prism 120b undulates up and down in a direction away from the transparent substrate ho. For example, the ridge line 121b of the strip-shaped crucible 120b undulates up and down in a direction perpendicular to the first surface 114, and the ridge line 121b undulates up and down along the extending direction of the strip-shaped crucible 120b (e.g., the first direction di). In this way, the light source 1001) can be effectively prevented from being partially adhered to other optical components (such as other optical films or liquid crystal panels), and the light source using the calender sheet 100b. The module can provide a uniform surface light source' and enable a display device (such as a liquid crystal display device) using the brightness enhancement sheet 100b to provide a good quality surface. Further, in the present embodiment, the strip prism 120b has a curved top portion 124b and two curved side edges 126b in any section perpendicular to its extending direction (such as the first direction D1), and the curved top portion i24b has a radius of curvature not equal to the curved portion The radius of curvature of the side 126b. In the present embodiment, the curvature half of the curved top portion 124b is smaller than the radius of curvature of the curved side edge i26b, and the curved top portion 124b and the curved side portion 126b both protrude outwardly from the strip shape 12b. However, in other embodiments, the curved top portion 124b can also be replaced with a sharp corner and the curved side edge 126b can be replaced with a straight side edge. Moreover, in the present embodiment, the average height of the strip prisms 120b in the direction perpendicular to the second surface 114 is at least partially different. For example, the average height of strips 120b-l is higher than the average height of strips 稜鏡i2〇b-2. As a result, the chance of sticking can be greatly reduced. 1A and 1B, the wing portion 132b of the protruding structure 130b of the present embodiment also extends from the protruding end 134b to the valley line 123, wherein the protruding end 134b protrudes from the ridge line 121b, and the wing portion 132b It protrudes from the facet 122b of the strip-shaped crucible 120b and the valley line 123. However, in other embodiments, the wing portion 132b may also extend from the raised end 134b to the facet 122b' but does not extend to the valley line 123. In the present embodiment, each of the convex structures 13〇b is disposed on a peak of the ridge line 121b away from the transparent substrate 110. However, in other embodiments, at least a portion of the raised structure may also be located on the valley of the ridge line near the light-transmissive substrate 201126208 j. χ xu-η -»3395 twf.doc/n. In the present embodiment, the maximum height of the individual strips 12〇b in a section (for example, a section taken along the reference line L of FIG. 3A and along a direction perpendicular to the second surface 114) Alternately above and below the average height of the strips 120b themselves, and this section is not parallel to the direction in which the strips 120b extend (ie, the first direction; 〇1). In addition, the average height of the strips 120b means the average distance from the rib fib on the strip 12b to the second surface 114. In this embodiment, the cross section is perpendicular to the direction in which the strips U0b extend. Specifically, δ, the section cut along the reference line L of FIG. 3A is sequentially from left to right by strips 〇12〇b-2, 12〇bl, 120b-4, 120b_6, 120b-8, The sections formed by 120b-3, 120b-10, 120b-12, 120b-5, 120b-14 and the strips 12b are alternately adjacent to the peaks and troughs of the ridgeline 121b. In this embodiment, the cross section of the strip prism 12〇b_2 is close to the peak of the ridge line 121b, so the maximum height of the i2〇b-2 in the cross section is higher than the average height of the strip; 条12〇]> The section of 1 is close to the valley of its own ridgeline 121b, so the maximum extent of the strip 稜鏡12〇bl is lower than its own average height; and the section of the strip 稜鏡12〇b_4 is close to the wave of its own ridgeline 121b. Therefore, the maximum height of the strip 稜鏡12〇b-4 in the cross section is higher than the average height of itself... and so on. In addition, in the present embodiment, in the plurality of sections parallel to the reference straight line B, the peaks or troughs of the sections in which the different turns are adjacent to the respective ridge lines, and the cross sections of the different turns are alternately Close to the crests and troughs. In this way, the patterning and sticking can be further suppressed. 201126208 F11S41 33395twf.doc/n In this embodiment, at least one strip 稜鏡 120b having an average height non-local maximum value is provided between any two adjacent strips 120b whose average height is a local maximum. For example, the average height of the strips 120b-1, 120b-3, 120b-5 is a local maximum, strips 120b-2, 120b-4, 120b-6, 120b-8, 120b_10, 120b -12, 120b-14, the average height is not the local maximum value', and the average height is the local maximum value between the strip 稜鏡120b-l and the strip 稜鏡120b-3 with an average height non-local maximum value strip Prisms 120b-4, 120b-6, 120b-8, and strips between the strips 稜鏡120b-3 and the strips 〇12〇b-5 having an average height of a local maximum are provided with an average height non-local maxima Shapes 120b-10, 120b-12. As a result, the sticking phenomenon can be more effectively suppressed. 4 is a top view of a brightness enhancement sheet according to still another embodiment of the present invention. Referring to Fig. 4', the brightness enhancement sheet 100c of the present embodiment is similar to the brightness enhancement sheet ι of Fig. λ, and the difference between the two is as follows. In the brightness enhancement sheet 1〇〇c of the embodiment, the ridge line 121 of the strip-shaped crucible 120c is bent to the left and right in a direction parallel to the second surface (such as the second surface 114 of FIG. 1A) (ie, a direction parallel to the plane of the drawing). . In this way, the phenomenon of moiré can be effectively suppressed. In the present embodiment, the valley line 123 is still linear, however, in other embodiments, the valley line 123 may be curved left and right in the direction parallel to the second surface. Further, in another embodiment, the ridge lines of the strip-shaped ridges may be undulated as shown in Fig. 3A in addition to being bent left and right as shown in Fig. 4. It is worth noting that the ridgeline 121b in Fig. 3A has only up and down undulations, and no left and right bends. Furthermore, the valley line can only be up and down without bending left and right, or both up and down and left and right. Further, in the present embodiment, the undulations or bending variations of the ridgelines of the strip-shaped prisms may have uniformity or non-uniformity. In summary, the brightness enhancing sheet of the embodiment of the present invention may have at least one of the following advantages or effects. Since the brightness enhancement sheet of the embodiment of the present invention has a convex structure protruding from the ridge line of the strip shape, the regularity of the ridge line and the height uniformity of the strip shape can be broken. In this way, the phenomenon of moiré generated by the brightness enhancement sheet and other optical components can be effectively reduced, and the phenomenon that the brightness enhancement sheet and the other element components are locally adhered can be avoided, thereby enhancing the brightness of the embodiment using the present invention. The light source module of the film can provide uniform surface light
源，且使抓用本發明之實施例之增光片的顯示裝置能夠提 供品質良好的晝面。此外’凸起結構的凸出端之表面可呈 圓滑狀’如此便可有效降低增光片與相鄰的光料件產生 到傷與磨損的機會。 A 以上所述者，僅為本發明之較佳實施例而已，當q t此限定本發明實施之範圍，即大凡依本發明申請專牙 ，圍及I明說_容所作之簡單的等效變化與修飾，皆々 函盍之乾圍内。另外本發明的任-實施例^ 申§月專利_賴達成本發韻揭露之The source and the display device using the light-increasing sheet of the embodiment of the present invention can provide a good quality kneading surface. In addition, the surface of the convex end of the convex structure can be rounded, which can effectively reduce the chance of damage and wear of the brightness-increasing sheet and the adjacent light-emitting member. The above is only the preferred embodiment of the present invention, and when qt is limited to the scope of the practice of the present invention, that is, the simple equivalent change made by the application of the invention according to the present invention. Modifications are all within the scope of the function. In addition, any embodiment of the present invention ^ 申月 patent _ Lai reached this rhyme disclosure
特點。此外，摘要部分和標題僅是用來辅助專 之用，並非用來限制本發明之權利範圍。 圖式簡單說明】 口 m2發明之一實施例之增光片的透視圖。 為圖1A之增光片沿著W、線的剖面圖。 =L為之另一實施例之增光片的剖面圖。 圖為本务明之又一實施例之增光片的立體圖 14 201126208 FT 1841 33395twf.doc/n 圖3B為圖3A之增光片沿著II-II線的剖面圖。 圖4為本發明之再一實施例之增光片的上視圖。 【主要元件符號說明】 100、100a、100b、100c :增光片 110 :透光基板 112 :第一表面 114 :第二表面 • 120、120a、120b、120bd、120b-2、120b-3、120b-4、 120b-5 、 120b-6 、 120b-8 、 120b-10 、 120b-12 、 120b-14 : 條狀稜鏡 121、 121b :稜線 122、 122b :稜面 123 :谷線 124b :彎曲頂部 126b :彎曲側邊 130、130b :凸起結構 • 132、132b :翼部 134、134b :凸出端 135 :表面 D1 :第一方向 D2 :第二方向 P1 :間距 P2 :間距 L :參考直線 15Features. In addition, the abstract sections and headings are only used to assist the exclusive use and are not intended to limit the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS A perspective view of a brightness enhancement sheet of one embodiment of the invention. It is a cross-sectional view of the brightness enhancement sheet of Fig. 1A along W and line. = L is a cross-sectional view of another embodiment of the brightness enhancement sheet. Fig. 3B is a cross-sectional view of the brightness enhancement sheet of Fig. 3A taken along line II-II. Fig. 3B is a perspective view of a brightness enhancement sheet according to still another embodiment of the present invention. 4 is a top view of a brightness enhancement sheet according to still another embodiment of the present invention. [Description of main component symbols] 100, 100a, 100b, 100c: light-increasing sheet 110: light-transmitting substrate 112: first surface 114: second surface • 120, 120a, 120b, 120bd, 120b-2, 120b-3, 120b- 4, 120b-5, 120b-6, 120b-8, 120b-10, 120b-12, 120b-14: strips 121, 121b: ridges 122, 122b: facets 123: valley lines 124b: curved tops 126b : curved side edges 130, 130b: convex structure • 132, 132b: wing portions 134, 134b: convex end 135: surface D1: first direction D2: second direction P1: pitch P2: spacing L: reference straight line 15